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Support JS invocations that return undefined

This commit is contained in:
Steve Sanderson 2017-12-15 11:40:43 +00:00
parent d1069e2d1e
commit fe6105a902
3 changed files with 22 additions and 2 deletions
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2
samples/MonoSanityClient/Examples.cs
View File

@ -37,7 +37,7 @@ namespace MonoSanityClient
return $".NET got exception: {result}";
}
return $".NET received: {result}";
return $".NET received: {(result ?? "(NULL)")}";
}
}
}

2
src/Microsoft.Blazor.Browser/Renderer.cs
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@ -7,7 +7,7 @@ namespace Microsoft.Blazor.Browser
{
public Renderer()
{
WebAssembly.Runtime.EvaluateJavaScript("console.log('Renderer'), 'done'");
WebAssembly.Runtime.EvaluateJavaScript("console.log('Renderer')");
}
}
}

20
test/Microsoft.Blazor.E2ETest/Tests/MonoSanityTest.cs
View File

@ -81,6 +81,26 @@ namespace Microsoft.Blazor.E2ETest.Tests
Assert.Contains("at triggerJsException", result);
}
[Fact]
public void CanEvaluateJsExpressionThatResultsInNull()
{
Navigate("/", noReload: true);
SetValue(Browser, "callJsEvalExpression", "null");
Browser.FindElement(By.CssSelector("#callJs button")).Click();
var result = GetValue(Browser, "callJsResult");
Assert.Equal(".NET received: (NULL)", result);
}
[Fact]
public void CanEvaluateJsExpressionThatResultsInUndefined()
{
Navigate("/", noReload: true);
SetValue(Browser, "callJsEvalExpression", "console.log('Not returning anything')");
Browser.FindElement(By.CssSelector("#callJs button")).Click();
var result = GetValue(Browser, "callJsResult");
Assert.Equal(".NET received: (NULL)", result);
}
private static string GetValue(IWebDriver webDriver, string elementId)
{
var element = webDriver.FindElement(By.Id(elementId));